A fast paced multiplayer shooter that pits aliens against humans in a strategic and action-packed struggle for survival!
User reviews:
Mostly Positive (60 reviews) - 71% of the 60 user reviews in the last 30 days are positive.
Very Positive (7,767 reviews) - 84% of the 7,767 user reviews for this game are positive.
Release Date: Oct 30, 2012

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Recent updates View all (147)

October 27

Build 311 Now Live on Steam! Free Weekend starts soon!

It’s crazy to think it has been four years since NS2 was launched and even more so to think that many of us were playing Natural Selection 14 years ago. Things have come a long way since then and to allude to the perfect pun, they continue to evolve.

We decided to run a free weekend starting today at 10 am PT to invite every player out there to celebrate this anniversary with us!

Furthermore we wanted to do something special for you ... So say hello to The Infested - an entirely new game-mode which we will be releasing on the Steam Workshop this Friday (October 28th)!

You have been dispatched to deal with a dangerous pathogen which has been detected within a remote TSF outpost. Race to repair the air filtration system before the pathogen corrodes it too severely and the air becomes overwhelmed by infectious spores. But watch out, one of your teammates has already been infected!

Work is also continuing on our conversion to 64-bit, FSFOD is hard at work chipping away at the pieces of this large puzzle and we get closer everyday to unlocking more potential for the future of Natural Selection. Signs of life are appearing, so stay tuned ‘cause there is plenty more to come over the next few months! We can’t wait for you to see what’s in store for NS2.

Additionally this patch includes some spooky/fun enhancements to the official maps and yes, you can throw candy in the ready room again!

Happy Anniversary and Happy Halloween!

Update 311 Changelog


  • Players can now see who the enemy commander is during pre-game, to help get games started faster
  • Made lights more spooky
Tweaks / Improvements
  • Revamped Training menu to be more orderly and useful for new players
  • Added the beginnings of a new Progression System to Hive
    • Just a first step to pave the way for many future enhancements
  • Moved player’s badge customization from old Hive website to be in-game via the Customize player menu
  • Play now window restyled to fit new themes and look nicer
  • Made some changes to prepare for Infested’s launch
  • Added new Halloween effects to various parts of the game, which will automatically change per a server’s seasonal setting. (Thanks IronHorse!)
  • You can now throw candy during warmup mode
  • Fixed several edge-case issues with Hive’s skill calculations
  • Fixed edge-case issue that prevented Hive from updating round data when submitted
  • Fixed conflicts with Hive changes within Hive Challenge and Tutorials
  • All map readyrooms have been made more spooky (Thanks Zavaro, Flatrectomy, and Samus!)
  • Fixed Overview.exe to not render seasonal groups
  • Fixed Decoda update.dll load error
  • Added more non colliding and commander invisible seasonal groups for use by mappers
  • Fixed that Modloader.SetupFileHook returned an error message even on success
  • Fixed that Filehook entry files could not be used as filehook
  • Added “Badges+” API to manage in-game badges

3 comments Read more

October 11

Build 310 Now Live

Today we have a treat for you. New first person animations have arrived for all the core pieces of a Marine's basic kit: Rifle, Pistol, and Axe! Every single animation has been rebuilt completely from scratch and ran through a new modernized pipeline to improve the weight and feel of the weapon handling and movement in NS2. In addition, while updating the animations, we have also fixed many issues in the animation graphs that control which animations play and how they blend together.


For many, playing the game with new animations may feel like a bit of a shock considering we've all been used to the same animations for upwards of five years; but give it a chance and I think you'll come to love them.

In addition to new animations, we also are switching the game over to Hive 2. This is no miracle fix for team stacking issues, but it does give us a lot more control over the system and ability to fix issues as they come up. There are many technical improvements to the new system, some of which you can read about here.

Although Hive 2 is not going to fix team balancing, it does bring with it some significant improvements to the underlying skill learning algorithm. Moultano has provided a great description of how this works, and an image showing the difference between how the two algorithms might perform when trying to discover a player's underlying skill value.

Moultano's Sage Words: “Imagine a mountain covered in fog…”

Notice how the Hive 2 value gets closer to the target value much faster (with many less games played) than if the same set of games is recorded by Hive 1.
This week we are also working on putting together a 64 bit beta build, which you will be able to opt in to and play with on build 310 servers so that you can help test the stability and performance of the 64 bit version of NS2 in actual games. Come join us in Discord for more details. The more people that help us test it, the better we will be able to make it.

Update 310 Changelog


  • Onos cost increased to 62 pres (was 55)
    When pres gain was increased to 1.25 per tick, Lerk cost had to be decreased to maintain the same initial timings. Because of how late into the game Onos arrive, their cost needs to be raised to account for the additional pres gain and restore the old timings. By pushing out the Oni by a minute or two, aliens have a larger need for Fades, and Marines have a little more breathing room and time to prepare.
  • Increased the Shotgun spread slightly to decrease the one-shot range to approximately what it was prior to the alien hit box changes
  • Lerk movement tweaks
    • Increase non-celerity flap force to match celerity to reduce Lerk’s dependence on Celerity
    • Improved crouch diving mechanics to help with ambushing and spiking
    • Increased strafe flap force to help with spiking
  • Decreased Gorges off-infestation belly slide friction so that Gorges can maintain their speed a bit longer (0.2 to 0.1)
Tweaks / Improvements
  • Hive 2.0
    • Algorithm Changes
      • Instead of a constant learning rate, Hive now uses both an AdaGrad-based learning rate and a constant learning rate. This makes skill values change faster initially, but change slower once they've converged. Expect large changes to your skill value for your first several games in the new system.
      • Skill values imported from the old hive system have been modified using a function of play time. (Thanks Nordic!) This fixes the issue where some new players started with a skill of 1000, and others started with a skill of 0. This has the effect of reducing all skill values, particularly those of newer players.
      • Exploits involving switching teams mid-game have been fixed. Players that switch teams will be credited with both a win and a loss, and the skill updates will be proportional to how long they played on each team, weighting the beginning of the game much more than the end.
      • Games with few human players no longer cause anomalously large skill updates. Games with fewer than 12 human players will have a very small effect on skills.
  • Added graphical element for mucous shield
  • Added an additional diagnostic icon which will appear when a server's performance dips to yellow or red
  • Fixed that script error icons would flash on screen after map loads
  • Fixed exploit that allowed players to regain all energy by exploiting the “Evolve Last Upgrades” feature
  • Fixed that you couldn't hit cysts at your feet with the Axe while standing on top of them
  • Fixed a client crash caused by trying to read from a model that has not finished loading
  • Fixed an scripted error occurring when bot commander got kicked
  • Fixed that alien bots tried to evolve upgrades on higher lifeforms even though they couldn't afford them
  • Fixed that commander bots would try to build RTs in a weird order due to it using birds-eye distance rather than path distance
  • Fixed that command chairs could not be built by bots
  • Fixed a bug that would cause a babbler-covered gorge to have a more difficult time heal spraying structures
  • Improved how cyst chains are placed.  This should make cysts more reliably connect to the closest cyst
  • Refinery : Stuck spot in Chasm <-> Lava Falls vent fixed (Thanks Zavaro!)
  • In Viewer’s Animation Graph Editor, you can now press the spacebar to recenter your view on either the selected or starting node
  • Fixed that LiveMixin:DeductHealth was not using the correct formulas for applying normal damage types, as it advertised

19 comments Read more


"NS2 is a genius mash of Counter Strike and Starcraft"
"This is getting close to my idea of the ultimate game"

About This Game

Natural Selection 2 pits alien against human in an action-packed struggle for survival. Wield devastating weaponry as a Frontiersman marine, or become the xenomorph as a deadly Kharaa lifeform.

Strategy Meets Shooter

Natural Selection 2 is a First Person Shooter and Real Time Stategy game rolled into one! Each team, alien and human, has a Commander. The Commander looks down on the battlefield and issues orders, places structures, collects resources, researches technology, and deploys abilities.

Here are some gameplay examples: A human Commander could drop health packs and ammunition to a trapped marine squad, and deploy sentry guns to help them defend their position. Or an alien Commander could grow a new Hive to spread infestation throughout newly captured territory, allowing more alien eggs to spawn...

Two Unique Sides

Aliens players choose to evolve into one of five lifeforms: The fast, fearsome Skulk can run on walls and deliver massive damage with its jaws. Lerks fly and deploy gasses to support their teammates in battle. Gorges heal other lifeforms and build tunnels, hydra turrets, walls, and other tactical structures. Fades blink in and out of battle, picking off marines with giant scythes. Finally, the giant Onos is so massive and so tough, that even entire marine squads can't take it down.

Marines wield rifles, shotguns, grenade launchers, pistols, and other weapons. Cluster grenades can clear ventilation shafts of sneaky Skulks, flamethrowers make short work of alien structures and infestation, and boosts dropped by the Commander increase combat effectiveness.

When attacking on foot doesn't cut it, marines can construct hulking Exosuits wielding miniguns and railguns, and equip jetpacks for high speed assaults on alien Hives.

Long Term Development

Natural Selection 2 receives constant updates. This year, 2016, Unknown Worlds continues to develop new features, content, and improvements.

Mod Tools Come Standard

Natural Selection 2 comes with all the tools we used to make the game. All game code is open source. That means you can create, and play, an endless variety of mods. Publish, share, and download mods from the Steam Workshop, and automatically download mods when you join modded games.

Digital Deluxe Edition

Digital Deluxe Edition includes:

  • Official Soundtrack - 1 hour of tribal, industrial music composed by David John and Simon Chylinski
  • Digital Art Book - 40+ pages of art by Cory Strader, including environments, creatures, weapons and more
  • Exclusive in-game marine model - Exclusive in-game marine model - A new marine model with custom visor and armor plating
  • Exclusive Wallpapers and Avatars - Unique views of the NS2 universe by Amanda Diaz

System Requirements

    • OS:Windows Vista 32-bit
    • Processor:Core 2 Duo E6700 (2.66 GHz) or better
    • Memory:3 GB RAM
    • Graphics:DirectX 9 compatible video card with 1 GB VRAM and support for Shader Model 3 (e.g. AMD X800, NVidia 8600 or better)
    • DirectX®:9.0
    • Hard Drive:12 GB HD space
    • OS:Windows 7 64-bit or newer
    • Processor:Core 2 Quad Q6600 (2.4 GHz) or better
    • Memory:4 GB RAM
    • Graphics:DirectX 9 compatible video card with 1.5 - 2 GB VRAM (AMD 5770, NVidia GTX 450 or better)
    • DirectX®:9.0
    • Hard Drive:12 GB HD space
    • Other Requirements:Broadband Internet connection
Customer reviews
Customer Review system updated Sept. 2016! Learn more
Mostly Positive (60 reviews)
Very Positive (7,767 reviews)
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5,008 reviews match the filters above ( Very Positive)
Most Helpful Reviews  In the past 30 days
4 of 4 people (100%) found this review helpful
1 person found this review funny
103.7 hrs on record
Posted: October 2
Got this game when it came out... it wasnt good back then and had loads of issues. Now however the game seems to have sorted out all the major and minor issues. The game is fun now and still looks good. There are still people playing with between 1-4 full servers every time I have logged on. Updates are still comming out. Decent amount of Commanders using ingame VOIP and better offline training stuff for new players to learn the game. Only negatives are that the fun is dependent on balanced teams and a decent RTS commander. Which isnt a given each match, but there are more than you would think. Balance wise the game seems okay, wouldnt call myself that qualified to judge, but maybe Onos (Alien tanks) are slightly OP mid game if the Marines have lagged slightly behind.
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3 of 3 people (100%) found this review helpful
19.2 hrs on record
Posted: September 29
awesome rts/fps mix. great atmosphere, nice graphics and (finally) good performance! it now runs smooth, even on my 7 year old rig! and that on linux too :)

played on Opensuse 13.2 with Nvidia GTX 275
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2 of 2 people (100%) found this review helpful
25.2 hrs on record
Posted: October 14
Take command if you're a strategist or fight as a ground solider. Teams have there own strengths and weaknessess. You need real teamwork in order to win. Seriously. If your leader sucks everyone sucks. If your soliders suck, the leader is boned. Play together, win together. I love this game. I only played so little because i suck XD.
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2 of 2 people (100%) found this review helpful
1,092.0 hrs on record
Posted: October 9

Game: 2 teams - aliens / mariens
are fighting for ressource points, controll over the map and
the final goal to destroy the mainbase of the other team to win the game.

Its great for fast fps player that like to avoid an attack by jumping back or strafe to left in the moment a alien is approching.
Weapons for close combat and Weapons for long range combat every weapon is different and can be used in his own way. Moste times you dont want to go allone with a flamethrower because the single target dmg is not so high and you could easy be killed by lowlifeforms aliens.

As a basic alien (you spawn like that called "skulk") you can walk on walls and use every conor ,dark room to hide and
supprise the enemys from behind. Take care to avoid big groups of rines try to sepperate one or just go for the last one in line.
Like the weapons on marienside, every alien player can evolve into other sorts of aliens.
Some are flying, some are bigass tanks and some are dmg dealer that cant take much dmg but are fast as hell and bad to aim at.

One bad thing i have to tell you all.
The Devs try to ♥♥♥♥ up a big part of the community by making them non hive server.
What? you asking .
They disconnect the servers they dont like from the STATS DATABASE they own.
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2 of 2 people (100%) found this review helpful
11.4 hrs on record
Posted: October 8
Very good gameplay and mechanics. Has plenty of action to go around. You can either duke it out in a semi all-out strategic war, or just mess around in sandbox.
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1 of 1 people (100%) found this review helpful
73.4 hrs on record
Posted: October 11
as a StarCraft player and a FPS lover this game is PERFECT. i absolutly love the comradery in this game. everyone is communicating, calling out shots, and barking orders.

a VERY helpful update adding tutorials (finally!) has been added since the last time i played which are so incredibly helpful. also the ability to play vs bots is terrific, expecially when trying to play as the commander because a new commander ruins the game for the rest of the players when playing with real players.

if you are looking for an asymmetrical shooter with strong team work and stratigy then this is definatly the game for you.
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1 of 1 people (100%) found this review helpful
137.1 hrs on record
Posted: October 15
This is my favorite team-based FPS of all time. It's asymmetrical warfare at it's finest.
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1 of 1 people (100%) found this review helpful
69.2 hrs on record
Posted: October 12
While the community was never titanic in it's size, it remains one of the best games I've ever played.

I would recommend if you're reading this and its still the year 2016/first half of 2017 AND you're considering the game: Buy it now. By my estimation half way through 2017 the game's population will reach a level where it will no longer be possible to get a full game server in a local region thus depriving you of the amazing gameplay.

Past June 2017 I would check how many people are playing if its sub 50 I would pass on the game unless its like 2$.

The sad reality is that this game is dieing in terms of it's population, and it is entirely a multiplayer game. However that does not mean you wont get a good bit of fun out of the game, and its one of those games I'll always reinstall every few months to get a few rounds in.
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1 of 1 people (100%) found this review helpful
216.5 hrs on record
Posted: October 19
This game has been and still is one of my favourite games to play. The idea and the execution really work together and the gameplay is very fun. Sadly the community is slowly getting smaller and smaller. This game does not deserve it, it looks and feels awesome for being a 5 year old game. The small community is what really kills the game for a lot of people and I don't blame them.

Overall: This game is a blast to play and I'd recommend it for anyone who likes this style of game. The small community does suck though so keep that in mind of you buy it. I want to give it a higher rating but with the small community it's hard. Overall I'd give this a 8.5/10.
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1 of 1 people (100%) found this review helpful
12.8 hrs on record
Posted: September 29
Amazin' 11/10
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Recently Posted
28.7 hrs
Posted: October 27
If there was ever a game with potential to become THE new esports title, then NS2. However it couldn't create a hype like csgo and so its a game with a fairly small community. It is still wonderful to play-as long as your commander doesn't suck. With the recent addition of a marine commander tutorial and the announcement of a tutorial for the alien commander, there will hopefully be more good commanders out there. I would recommend to start on "rookie only" community servers so you don't get crushed instantly. All in all this is a very cool game to play, alone or with friends, and I hope the best for ns3.
Helpful? Yes No Funny
49.6 hrs
Posted: October 24
Xenoform spotted.
Helpful? Yes No Funny
3,043.4 hrs
Posted: October 23
Very good game. Worth the price.
Helpful? Yes No Funny
Steve Nash
1.8 hrs
Posted: October 22
Feminism is a range of political movements, ideologies, and social movements that share a common goal: to define, establish, and achieve political, economic, personal, and social rights for women that are equal to those of men.[1][2] This includes seeking to establish equal opportunities for women in education and employment.

Feminist movements have campaigned and continue to campaign for women's rights, including the right to vote, to hold public office, to work, to earn fair wages or equal pay, to own property, to receive education, to enter contracts, to have equal rights within marriage, and to have maternity leave. Feminists have also worked to promote bodily autonomy and integrity, and to protect women and girls from ♥♥♥♥, sexual harassment, and domestic violence.[3]

Feminist campaigns are generally considered to be a main force behind major historical societal changes for women's rights, particularly in the West, where they are near-universally credited with achieving women's suffrage, gender neutrality in English, reproductive rights for women (including access to contraceptives and abortion), and the right to enter into contracts and own property.[4] Although feminist advocacy is, and has been, mainly focused on women's rights, some feminists, including bell hooks, argue for the inclusion of men's liberation within its aims because men are also harmed by traditional gender roles.[5] Feminist theory, which emerged from feminist movements, aims to understand the nature of gender inequality by examining women's social roles and lived experience; it has developed theories in a variety of disciplines in order to respond to issues concerning gender.[6][7]
Helpful? Yes No Funny
270.4 hrs
Posted: October 22
A game where teamwork and skill are put to the test
Helpful? Yes No Funny
Punny Bunny
14.5 hrs
Posted: October 22
Overly complicated and almost eternally imbalanced. Can't recommend this despite the developer's incredible dedication and efforts, alas.
Helpful? Yes No Funny
73.4 hrs
Posted: October 22
There isn't a game out there quite like this. This game mixes the RTS and FPS genres perfectly, and it offers an experience no other game to date has been able to touch. Perhaps best of all, this experience is just $10 away, something most people spend at their favorite burger joint almost daily.

Do yourself a favor and buy this game. Don't get discouraged by the learning curve. Watch a few tutorials online, stick with your team mates, and listen to your commander, and you'll have a great time.
Helpful? Yes No Funny
206.2 hrs
Posted: October 20
The game itself is amazing. I want to love this game. I really do.

But the community is utterly ♥♥♥♥♥. Very toxic players that regularly ♥♥♥♥ talk each other and any new players that attempt to join their server, either abusing them verbally or just kicking them out of the match without a second thought. The skill gap between new and veteran players is so large that many people that play NS2 will cheat and claim that it's 'skill'.

And the worst part is that nothing will be done about this, because the maximum amount of people online is maybe 200 or less at peak hours. So you'll run into these same people.. over, and over, and over again.

Do not buy this game. It's a shell of its former self and the developers have all but abandoned it in favor of other venues. Cheaters will never be punished.
Helpful? Yes No Funny
16.8 hrs
Posted: October 19
Really nice game. they other game subnautica is also nice.
Helpful? Yes No Funny